www.pudn.com > ucosv2(GUI).rar > GUIValf.c

/*
*********************************************************************************************************
*                                                uC/GUI
*                        Universal graphic software for embedded applications
*
*                       (c) Copyright 2002, Micrium Inc., Weston, FL
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*              µC/GUI is protected by international copyright laws. Knowledge of the
*              source code may not be used to write a similar product. This file may
*              only be used in accordance with a license and should not be redistributed
*              in any way. We appreciate your understanding and fairness.
*
---------------------------------------------------------------------- 
File        : GUIValF.C 
Purpose     : Displaying floating point values 
---------------------------------------------------------------------- 
Version-Date---Author-Explanation 
---------------------------------------------------------------------- 
1.00.00 990322 RS     First release    
---------------------------------------------------------------------- 
Known problems or limitations with current version 
---------------------------------------------------------------------- 
None. 
---------------------------END-OF-HEADER------------------------------ 
*/ 
 
#include "GUI_Protected.H" 
#include "math.h" 
 
/* 
	******************************************* 
	*                                         * 
	*          Helper functions               * 
	*                                         * 
	******************************************* 
*/ 
 
static void _DispFloatFix(float f, char Len, char Decs, int DrawPlusSign) { 
  f *= GUI_Pow10[Decs]; 
  f += 0.5; 
  f = (float) floor (f); 
  if (DrawPlusSign) 
    GUI_DispSDecShift((long)f, Len, Decs); 
  else 
    GUI_DispDecShift((long)f, Len, Decs); 
} 
 
/* 
	******************************************* 
	*                                         * 
	*     optional sign display routines      * 
	*                                         * 
	******************************************* 
*/ 
 
void GUI_DispFloatFix(float f, char Len, char Decs) { 
  _DispFloatFix(f, Len, Decs, 0); 
} 
 
void GUI_DispFloatMin(float f, char Fract) { 
  char Len; 
  Len = GUI_Long2Len((long)f); 
  _DispFloatFix(f, (char)(Len+Fract+1), (char)Fract, 0); 
} 
 
void GUI_DispFloat(float f, char Len) { 
  int Decs; 
  Decs =  Len - GUI_Long2Len((long)f)-1; 
  if (Decs<0) 
    Decs =0; 
  _DispFloatFix(f, Len, (char)Decs, 0); 
} 
 
/* 
	******************************************* 
	*                                         * 
	*    Signed display routines              * 
	*                                         * 
	******************************************* 
*/ 
 
void GUI_DispSFloatFix(float f, char Len, char Fract) { 
  _DispFloatFix (f, Len, Fract, 1); 
} 
 
void GUI_DispSFloatMin(float f, char Fract) { 
  char Len; 
  Len = GUI_Long2Len((long)f); 
  if (f>0) 
    Len++; 
  _DispFloatFix(f, (char)(Len+Fract+1), (char)Fract, 1); 
}